Pi3 USB Boot Device with Picam Motion

Don't use

auto_brightness on

with the newer Motion! It pulses dark/light like the Pi2s with older motion can.

There are different terms for some of the same parameters in the newer Motion version conf, so older Pi2 conf files won't work and break motion if used. However, once identified by line comparison of the old to new, same settings for these newer terms can be used.

Setting up motion (4.0-1) …Adding group motion' (GID 115) ...Done.Warning: The home dir /var/lib/motion you specified already exists.Adding system user motion' (UID 109) …Adding new user motion' (UID 109) with group motion' …The home directory /var/lib/motion' already exists. Not copying from /etc/skel'.adduser: Warning: The home directory /var/lib/motion' does not belong to the user you are currently creating.Adding user motion' to group video' ...Adding user motion to group videoDone.Setting up libavdevice57:armhf (7:3.2.5-1) ...Setting up ffmpeg (7:3.2.5-1) ...Processing triggers for libc-bin (2.24-11+deb9u1) ...Processing triggers for systemd (232-25+deb9u1) ...